发明授权
- 专利标题： System for signalling the termination of the lifetime of a battery for electronic timepieces
- 专利标题（中）： 用于发送电子计时器电池寿命终止的系统
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申请号： US966063申请日： 1978-12-04
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公开(公告)号： US4262349A公开(公告)日： 1981-04-14
- 发明人: Fukuo Sekiya , Takashi Yamada , Kazunari Kume
- 申请人： Fukuo Sekiya , Takashi Yamada , Kazunari Kume
- 申请人地址： JPX Tokyo
- 专利权人： Citizen Watch Co., Ltd.
- 当前专利权人： Citizen Watch Co., Ltd.
- 当前专利权人地址： JPX Tokyo
- 主分类号： G04C3/14
- IPC分类号： G04C3/14 ; G04C10/04 ; G04B1/26 ; G04B25/00
摘要：
A system for signalling the termination of the lifetime of a battery for an electronic timepiece is disclosed. The system includes a hand display device, an electro-optical display device, a battery voltage detecting circuit adapted to produce a signal when voltage of the battery lowers below a predetermined value, and means for modulating the time display pulse to be applied to one of the display devices in response to the signal generated in the battery voltage detecting circuit, thereby to modifying the time display for informing the end of the battery lifetime.
公开/授权文献
- US5797555A Tape cassette 公开/授权日：1998-08-25
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